Asklemmy

So, i just started using I3 through Arcolinux, it's working pretty nicely all things considered but i'm having one little problem, a game i play uses keys that are very close to a keybind combination that is set here and that makes me accidentally trigger it sometimes, and i wanted to know how, if possible i can make so this keybind is disabled while I'm playing this game, searching for a solution i found this thread on reddit (yeah, lack of better places, but hey I'm asking here now so it's an opportunity to get some info on here!) That seems to be talking about pretty much what i need, buut i have no idea how to create these scripts and all that and i didn't had much success on searching on how to do this kind of thing before so... a little help please? Is there any more efficient method, or something like that?